git.oblomov.eu Git - wine/blob - dlls/shell32/shellole.c

   1 /*
   2  *      handling of SHELL32.DLL OLE-Objects
   3  *
   4  *      Copyright 1997  Marcus Meissner
   5  *      Copyright 1998  Juergen Schmied  <juergen.schmied@metronet.de>
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "shellapi.h"
  28 #include "shlobj.h"
  29 #include "shlguid.h"
  30 #include "winreg.h"
  31 #include "winerror.h"
  32
  33 #include "undocshell.h"
  34 #include "wine/unicode.h"
  35 #include "shell32_main.h"
  36
  37 #include "wine/debug.h"
  38 #include "shlwapi.h"
  39 #include "winuser.h"
  40 #include "debughlp.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(shell);
  43
  44 DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id);
  45 extern HRESULT WINAPI IFSFolder_Constructor(IUnknown * pUnkOuter, REFIID riid, LPVOID * ppv);
  46
  47 const WCHAR sShell32[12] = {'S','H','E','L','L','3','2','.','D','L','L','\0'};
  48 const WCHAR sOLE32[10] = {'O','L','E','3','2','.','D','L','L','\0'};
  49
  50 HINSTANCE hShellOle32 = 0;
  51 /**************************************************************************
  52  * Default ClassFactory types
  53  */
  54 typedef HRESULT (CALLBACK *LPFNCREATEINSTANCE)(IUnknown* pUnkOuter, REFIID riid, LPVOID* ppvObject);
  55 IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst);
  56
  57 /* this table contains all CLSID's of shell32 objects */
  58 struct {
  59         REFIID                  riid;
  60         LPFNCREATEINSTANCE      lpfnCI;
  61 } InterfaceTable[5] = {
  62         {&CLSID_ShellFSFolder,  &IFSFolder_Constructor},
  63         {&CLSID_MyComputer,     &ISF_MyComputer_Constructor},
  64         {&CLSID_ShellDesktop,   &ISF_Desktop_Constructor},
  65         {&CLSID_ShellLink,      &IShellLink_Constructor},
  66         {NULL,NULL}
  67 };
  68
  69 /*************************************************************************
  70  * __CoCreateInstance [internal]
  71  *
  72  * NOTES
  73  *   wraper for late bound call to OLE32.DLL
  74  *
  75  */
  76 HRESULT (WINAPI *pCoCreateInstance)(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv) = NULL;
  77
  78 void * __GetExternalFunc(HMODULE * phModule, LPCWSTR szModuleName, LPCSTR szProcName)
  79 {
  80         if (!*phModule) *phModule = GetModuleHandleW(szModuleName);
  81         if (!*phModule) *phModule = LoadLibraryW(szModuleName);
  82         if (*phModule) return GetProcAddress(*phModule, szProcName);
  83         return NULL;
  84 }
  85
  86 HRESULT  __CoCreateInstance(REFCLSID rclsid, LPUNKNOWN pUnkOuter, DWORD dwClsContext, REFIID iid, LPVOID *ppv)
  87 {
  88         if(!pCoCreateInstance) pCoCreateInstance = __GetExternalFunc(&hShellOle32, sOLE32, "CoCreateInstance");
  89         if(!pCoCreateInstance) return E_FAIL;
  90         return pCoCreateInstance(rclsid, pUnkOuter, dwClsContext, iid, ppv);
  91 }
  92
  93 /*************************************************************************
  94  * SHCoCreateInstance [SHELL32.102]
  95  *
  96  * NOTES
  97  *     exported by ordinal
  98  */
  99
 100 /* FIXME: this should be SHLWAPI.24 since we can't yet import by ordinal */
 101
 102 DWORD WINAPI __SHGUIDToStringW (REFGUID guid, LPWSTR str)
 103 {
 104     WCHAR sFormat[52] = {'{','%','0','8','l','x','-','%','0','4',
 105                          'x','-','%','0','4','x','-','%','0','2',
 106                          'x','%','0','2','x','-','%','0','2','x',
 107                          '%','0','2','x','%','0','2','x','%','0',
 108                          '2','x','%','0','2','x','%','0','2','x',
 109                          '}','\0'};
 110
 111     return wsprintfW ( str, sFormat,
 112              guid->Data1, guid->Data2, guid->Data3,
 113              guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
 114              guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7] );
 115
 116 }
 117
 118 /************************************************************************/
 119
 120 LRESULT WINAPI SHCoCreateInstance(
 121         LPCSTR aclsid,
 122         REFCLSID clsid,
 123         LPUNKNOWN pUnkOuter,
 124         REFIID refiid,
 125         LPVOID *ppv)
 126 {
 127         DWORD   hres;
 128         IID     iid;
 129         CLSID * myclsid = (CLSID*)clsid;
 130         WCHAR   sKeyName[MAX_PATH];
 131         const   WCHAR sCLSID[7] = {'C','L','S','I','D','\\','\0'};
 132         WCHAR   sClassID[60];
 133         const WCHAR sInProcServer32[16] ={'\\','I','n','p','r','o','c','S','e','r','v','e','r','3','2','\0'};
 134         const WCHAR sLoadWithoutCOM[15] ={'L','o','a','d','W','i','t','h','o','u','t','C','O','M','\0'};
 135         WCHAR   sDllPath[MAX_PATH];
 136         HKEY    hKey;
 137         DWORD   dwSize;
 138         BOOLEAN bLoadFromShell32 = FALSE;
 139         BOOLEAN bLoadWithoutCOM = FALSE;
 140         IClassFactory * pcf = NULL;
 141
 142         if(!ppv) return E_POINTER;
 143         *ppv=NULL;
 144
 145         /* if the clsid is a string, convert it */
 146         if (!clsid)
 147         {
 148           if (!aclsid) return REGDB_E_CLASSNOTREG;
 149           SHCLSIDFromStringA(aclsid, &iid);
 150           myclsid = &iid;
 151         }
 152
 153         TRACE("(%p,%s,unk:%p,%s,%p)\n",
 154                 aclsid,shdebugstr_guid(myclsid),pUnkOuter,shdebugstr_guid(refiid),ppv);
 155
 156         /* we look up the dll path in the registry */
 157         __SHGUIDToStringW(myclsid, sClassID);
 158         lstrcpyW(sKeyName, sCLSID);
 159         lstrcatW(sKeyName, sClassID);
 160         lstrcatW(sKeyName, sInProcServer32);
 161
 162         if (ERROR_SUCCESS == RegOpenKeyExW(HKEY_CLASSES_ROOT, sKeyName, 0, KEY_READ, &hKey)) {
 163             dwSize = sizeof(sDllPath);
 164             SHQueryValueExW(hKey, NULL, 0,0, sDllPath, &dwSize );
 165
 166             /* if a special registry key is set we loading a shell extension without help of OLE32 */
 167             bLoadWithoutCOM = (ERROR_SUCCESS == SHQueryValueExW(hKey, sLoadWithoutCOM, 0, 0, 0, 0));
 168
 169             /* if the com object is inside shell32 omit use of ole32 */
 170             bLoadFromShell32 = (0==lstrcmpiW( PathFindFileNameW(sDllPath), sShell32));
 171
 172             RegCloseKey (hKey);
 173         } else {
 174             /* since we can't find it in the registry we try internally */
 175             bLoadFromShell32 = TRUE;
 176         }
 177
 178         TRACE("WithoutCom=%u FromShell=%u\n", bLoadWithoutCOM, bLoadFromShell32);
 179
 180         /* now we create a instance */
 181         if (bLoadFromShell32) {
 182             if (! SUCCEEDED(SHELL32_DllGetClassObject(myclsid, &IID_IClassFactory,(LPVOID*)&pcf))) {
 183                 ERR("LoadFromShell failed for CLSID=%s\n", shdebugstr_guid(myclsid));
 184             }
 185         } else if (bLoadWithoutCOM) {
 186
 187             /* load a external dll without ole32 */
 188             HANDLE hLibrary;
 189             typedef HRESULT (CALLBACK *DllGetClassObjectFunc)(REFCLSID clsid, REFIID iid, LPVOID *ppv);
 190             DllGetClassObjectFunc DllGetClassObject;
 191
 192             if ((hLibrary = LoadLibraryExW(sDllPath, 0, LOAD_WITH_ALTERED_SEARCH_PATH)) == 0) {
 193                 ERR("couldn't load InprocServer32 dll %s\n", debugstr_w(sDllPath));
 194                 hres = E_ACCESSDENIED;
 195                 goto end;
 196             } else if (!(DllGetClassObject = (DllGetClassObjectFunc)GetProcAddress(hLibrary, "DllGetClassObject"))) {
 197                 ERR("couldn't find function DllGetClassObject in %s\n", debugstr_w(sDllPath));
 198                 FreeLibrary( hLibrary );
 199                 hres = E_ACCESSDENIED;
 200                 goto end;
 201             } else if (! SUCCEEDED(hres = DllGetClassObject(myclsid, &IID_IClassFactory, (LPVOID*)&pcf))) {
 202                     TRACE("GetClassObject failed 0x%08lx\n", hres);
 203                     goto end;
 204             }
 205
 206         } else {
 207
 208             /* load a external dll in the usual way */
 209             hres = __CoCreateInstance(myclsid, pUnkOuter, CLSCTX_INPROC_SERVER, refiid, ppv);
 210             goto end;
 211         }
 212
 213         /* here we should have a ClassFactory */
 214         if (!pcf) return E_ACCESSDENIED;
 215
 216         hres = IClassFactory_CreateInstance(pcf, pUnkOuter, refiid, ppv);
 217         IClassFactory_Release(pcf);
 218 end:
 219         if(hres!=S_OK)
 220         {
 221           ERR("failed (0x%08lx) to create CLSID:%s IID:%s\n",
 222               hres, shdebugstr_guid(myclsid), shdebugstr_guid(refiid));
 223           ERR("class not found in registry\n");
 224         }
 225
 226         TRACE("-- instance: %p\n",*ppv);
 227         return hres;
 228 }
 229
 230 /*************************************************************************
 231  * DllGetClassObject   [SHELL32.128]
 232  */
 233 HRESULT WINAPI SHELL32_DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 234 {
 235         HRESULT hres = E_OUTOFMEMORY;
 236         IClassFactory * pcf = NULL;
 237         int i;
 238
 239         TRACE("CLSID:%s,IID:%s\n",shdebugstr_guid(rclsid),shdebugstr_guid(iid));
 240
 241         if (!ppv) return E_INVALIDARG;
 242         *ppv = NULL;
 243
 244         /* search our internal interface table */
 245         for(i=0;InterfaceTable[i].riid;i++) {
 246             if(IsEqualIID(InterfaceTable[i].riid, rclsid)) {
 247                 TRACE("index[%u]\n", i);
 248                 pcf = IDefClF_fnConstructor(InterfaceTable[i].lpfnCI, NULL, NULL);
 249             }
 250         }
 251
 252         if (!pcf) {
 253             FIXME("failed for CLSID=%s\n", shdebugstr_guid(rclsid));
 254             return CLASS_E_CLASSNOTAVAILABLE;
 255         }
 256
 257         hres = IClassFactory_QueryInterface(pcf, iid, ppv);
 258         IClassFactory_Release(pcf);
 259
 260         TRACE("-- pointer to class factory: %p\n",*ppv);
 261         return hres;
 262 }
 263
 264 /*************************************************************************
 265  * SHCLSIDFromString                            [SHELL32.147]
 266  *
 267  * NOTES
 268  *     exported by ordinal
 269  */
 270 DWORD WINAPI SHCLSIDFromStringA (LPCSTR clsid, CLSID *id)
 271 {
 272     WCHAR buffer[40];
 273     TRACE("(%p(%s) %p)\n", clsid, clsid, id);
 274     if (!MultiByteToWideChar( CP_ACP, 0, clsid, -1, buffer, sizeof(buffer)/sizeof(WCHAR) ))
 275         return CO_E_CLASSSTRING;
 276     return CLSIDFromString( buffer, id );
 277 }
 278 DWORD WINAPI SHCLSIDFromStringW (LPWSTR clsid, CLSID *id)
 279 {
 280         TRACE("(%p(%s) %p)\n", clsid, debugstr_w(clsid), id);
 281         return CLSIDFromString(clsid, id);
 282 }
 283 DWORD WINAPI SHCLSIDFromStringAW (LPVOID clsid, CLSID *id)
 284 {
 285         if (SHELL_OsIsUnicode())
 286           return SHCLSIDFromStringW (clsid, id);
 287         return SHCLSIDFromStringA (clsid, id);
 288 }
 289
 290 /*************************************************************************
 291  *      Shell Memory Allocator
 292  */
 293
 294 /* set the vtable later */
 295 extern ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32;
 296
 297 /* this is the static object instance */
 298 typedef struct {
 299         ICOM_VFIELD(IMalloc);
 300         DWORD dummy;
 301 } _ShellMalloc;
 302
 303 _ShellMalloc Shell_Malloc = { &VT_Shell_IMalloc32,1};
 304
 305 /* this is the global allocator of shell32 */
 306 IMalloc * ShellTaskAllocator = NULL;
 307
 308 /******************************************************************************
 309  *              IShellMalloc_QueryInterface        [VTABLE]
 310  */
 311 static HRESULT WINAPI IShellMalloc_fnQueryInterface(LPMALLOC iface, REFIID refiid, LPVOID *obj)
 312 {
 313         TRACE("(%s,%p)\n",shdebugstr_guid(refiid),obj);
 314         if (IsEqualIID(refiid, &IID_IUnknown) || IsEqualIID(refiid, &IID_IMalloc)) {
 315                 *obj = (LPMALLOC) &Shell_Malloc;
 316                 return S_OK;
 317         }
 318         return E_NOINTERFACE;
 319 }
 320
 321 /******************************************************************************
 322  *              IShellMalloc_AddRefRelease        [VTABLE]
 323  */
 324 static ULONG WINAPI IShellMalloc_fnAddRefRelease(LPMALLOC iface)
 325 {
 326         return 1;
 327 }
 328
 329 /******************************************************************************
 330  *              IShellMalloc_Alloc [VTABLE]
 331  */
 332 static LPVOID WINAPI IShellMalloc_fnAlloc(LPMALLOC iface, DWORD cb)
 333 {
 334         LPVOID addr;
 335
 336         addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
 337         TRACE("(%p,%ld);\n",addr,cb);
 338         return addr;
 339 }
 340
 341 /******************************************************************************
 342  *              IShellMalloc_Realloc [VTABLE]
 343  */
 344 static LPVOID WINAPI IShellMalloc_fnRealloc(LPMALLOC iface, LPVOID pv, DWORD cb)
 345 {
 346         LPVOID addr;
 347
 348         if (pv) {
 349                 if (cb) {
 350                         addr = (LPVOID) LocalReAlloc((HANDLE) pv, cb, GMEM_ZEROINIT | GMEM_MOVEABLE);
 351                 } else {
 352                         LocalFree((HANDLE) pv);
 353                         addr = NULL;
 354                 }
 355         } else {
 356                 if (cb) {
 357                         addr = (LPVOID) LocalAlloc(GMEM_ZEROINIT, cb);
 358                 } else {
 359                         addr = NULL;
 360                 }
 361         }
 362
 363         TRACE("(%p->%p,%ld)\n",pv,addr,cb);
 364         return addr;
 365 }
 366
 367 /******************************************************************************
 368  *              IShellMalloc_Free [VTABLE]
 369  */
 370 static VOID WINAPI IShellMalloc_fnFree(LPMALLOC iface, LPVOID pv)
 371 {
 372         TRACE("(%p)\n",pv);
 373         LocalFree((HANDLE) pv);
 374 }
 375
 376 /******************************************************************************
 377  *              IShellMalloc_GetSize [VTABLE]
 378  */
 379 static DWORD WINAPI IShellMalloc_fnGetSize(LPMALLOC iface, LPVOID pv)
 380 {
 381         DWORD cb = (DWORD) LocalSize((HANDLE)pv);
 382         TRACE("(%p,%ld)\n", pv, cb);
 383         return cb;
 384 }
 385
 386 /******************************************************************************
 387  *              IShellMalloc_DidAlloc [VTABLE]
 388  */
 389 static INT WINAPI IShellMalloc_fnDidAlloc(LPMALLOC iface, LPVOID pv)
 390 {
 391         TRACE("(%p)\n",pv);
 392         return -1;
 393 }
 394
 395 /******************************************************************************
 396  *              IShellMalloc_HeapMinimize [VTABLE]
 397  */
 398 static VOID WINAPI IShellMalloc_fnHeapMinimize(LPMALLOC iface)
 399 {
 400         TRACE("()\n");
 401 }
 402
 403 static ICOM_VTABLE(IMalloc) VT_Shell_IMalloc32 =
 404 {
 405         ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 406         IShellMalloc_fnQueryInterface,
 407         IShellMalloc_fnAddRefRelease,
 408         IShellMalloc_fnAddRefRelease,
 409         IShellMalloc_fnAlloc,
 410         IShellMalloc_fnRealloc,
 411         IShellMalloc_fnFree,
 412         IShellMalloc_fnGetSize,
 413         IShellMalloc_fnDidAlloc,
 414         IShellMalloc_fnHeapMinimize
 415 };
 416
 417 /*************************************************************************
 418  *                       SHGetMalloc                    [SHELL32.@]
 419  * returns the interface to shell malloc.
 420  *
 421  * NOTES
 422  *  uses OLE32.CoGetMalloc if OLE32.DLL is already loaded.
 423  *  if not it uses a internal implementations as fallback.
 424  */
 425 DWORD WINAPI SHGetMalloc(LPMALLOC *lpmal)
 426 {
 427         HRESULT (WINAPI *pCoGetMalloc)(DWORD,LPMALLOC *);
 428         HMODULE hOle32;
 429
 430         TRACE("(%p)\n", lpmal);
 431
 432         if (!ShellTaskAllocator)
 433         {
 434                 hOle32 = GetModuleHandleA("OLE32.DLL");
 435                 if(hOle32) {
 436                         pCoGetMalloc = (void*) GetProcAddress(hOle32, "CoGetMalloc");
 437                         if (pCoGetMalloc) pCoGetMalloc(MEMCTX_TASK, &ShellTaskAllocator);
 438                         TRACE("got ole32 IMalloc\n");
 439                 }
 440                 if(!ShellTaskAllocator) {
 441                         ShellTaskAllocator = (IMalloc* ) &Shell_Malloc;
 442                         TRACE("use fallback allocator\n");
 443                 }
 444         }
 445         *lpmal = ShellTaskAllocator;
 446         return  S_OK;
 447 }
 448
 449 /*************************************************************************
 450  * SHAlloc                                      [SHELL32.196]
 451  *
 452  * NOTES
 453  *     exported by ordinal
 454  */
 455 LPVOID WINAPI SHAlloc(DWORD len)
 456 {
 457         IMalloc * ppv;
 458         LPBYTE ret;
 459
 460         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 461
 462         ret = (LPVOID) IMalloc_Alloc(ShellTaskAllocator, len);
 463         TRACE("%lu bytes at %p\n",len, ret);
 464         return (LPVOID)ret;
 465 }
 466
 467 /*************************************************************************
 468  * SHFree                                       [SHELL32.195]
 469  *
 470  * NOTES
 471  *     exported by ordinal
 472  */
 473 void WINAPI SHFree(LPVOID pv)
 474 {
 475         IMalloc * ppv;
 476
 477         TRACE("%p\n",pv);
 478         if (!ShellTaskAllocator) SHGetMalloc(&ppv);
 479         IMalloc_Free(ShellTaskAllocator, pv);
 480 }
 481
 482 /*************************************************************************
 483  * SHGetDesktopFolder                   [SHELL32.@]
 484  */
 485 DWORD WINAPI SHGetDesktopFolder(IShellFolder **psf)
 486 {
 487         HRESULT hres = S_OK;
 488         TRACE("\n");
 489
 490         if(!psf) return E_INVALIDARG;
 491         *psf = NULL;
 492         hres = ISF_Desktop_Constructor(NULL, &IID_IShellFolder,(LPVOID*)psf);
 493
 494         TRACE("-- %p->(%p)\n",psf, *psf);
 495         return hres;
 496 }
 497 /**************************************************************************
 498  * Default ClassFactory Implementation
 499  *
 500  * SHCreateDefClassObject
 501  *
 502  * NOTES
 503  *  helper function for dll's without a own classfactory
 504  *  a generic classfactory is returned
 505  *  when the CreateInstance of the cf is called the callback is executed
 506  */
 507
 508 typedef struct
 509 {
 510     ICOM_VFIELD(IClassFactory);
 511     DWORD                       ref;
 512     CLSID                       *rclsid;
 513     LPFNCREATEINSTANCE          lpfnCI;
 514     const IID *                 riidInst;
 515     ULONG *                     pcRefDll; /* pointer to refcounter in external dll (ugrrr...) */
 516 } IDefClFImpl;
 517
 518 static ICOM_VTABLE(IClassFactory) dclfvt;
 519
 520 /**************************************************************************
 521  *  IDefClF_fnConstructor
 522  */
 523
 524 IClassFactory * IDefClF_fnConstructor(LPFNCREATEINSTANCE lpfnCI, PLONG pcRefDll, REFIID riidInst)
 525 {
 526         IDefClFImpl* lpclf;
 527
 528         lpclf = (IDefClFImpl*)HeapAlloc(GetProcessHeap(),0,sizeof(IDefClFImpl));
 529         lpclf->ref = 1;
 530         ICOM_VTBL(lpclf) = &dclfvt;
 531         lpclf->lpfnCI = lpfnCI;
 532         lpclf->pcRefDll = pcRefDll;
 533
 534         if (pcRefDll) InterlockedIncrement(pcRefDll);
 535         lpclf->riidInst = riidInst;
 536
 537         TRACE("(%p)%s\n",lpclf, shdebugstr_guid(riidInst));
 538         return (LPCLASSFACTORY)lpclf;
 539 }
 540 /**************************************************************************
 541  *  IDefClF_fnQueryInterface
 542  */
 543 static HRESULT WINAPI IDefClF_fnQueryInterface(
 544   LPCLASSFACTORY iface, REFIID riid, LPVOID *ppvObj)
 545 {
 546         ICOM_THIS(IDefClFImpl,iface);
 547
 548         TRACE("(%p)->(%s)\n",This,shdebugstr_guid(riid));
 549
 550         *ppvObj = NULL;
 551
 552         if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IClassFactory)) {
 553           *ppvObj = This;
 554           InterlockedIncrement(&This->ref);
 555           return S_OK;
 556         }
 557
 558         TRACE("-- E_NOINTERFACE\n");
 559         return E_NOINTERFACE;
 560 }
 561 /******************************************************************************
 562  * IDefClF_fnAddRef
 563  */
 564 static ULONG WINAPI IDefClF_fnAddRef(LPCLASSFACTORY iface)
 565 {
 566         ICOM_THIS(IDefClFImpl,iface);
 567         TRACE("(%p)->(count=%lu)\n",This,This->ref);
 568
 569         return InterlockedIncrement(&This->ref);
 570 }
 571 /******************************************************************************
 572  * IDefClF_fnRelease
 573  */
 574 static ULONG WINAPI IDefClF_fnRelease(LPCLASSFACTORY iface)
 575 {
 576         ICOM_THIS(IDefClFImpl,iface);
 577         TRACE("(%p)->(count=%lu)\n",This,This->ref);
 578
 579         if (!InterlockedDecrement(&This->ref))
 580         {
 581           if (This->pcRefDll) InterlockedDecrement(This->pcRefDll);
 582
 583           TRACE("-- destroying IClassFactory(%p)\n",This);
 584           HeapFree(GetProcessHeap(),0,This);
 585           return 0;
 586         }
 587         return This->ref;
 588 }
 589 /******************************************************************************
 590  * IDefClF_fnCreateInstance
 591  */
 592 static HRESULT WINAPI IDefClF_fnCreateInstance(
 593   LPCLASSFACTORY iface, LPUNKNOWN pUnkOuter, REFIID riid, LPVOID *ppvObject)
 594 {
 595         ICOM_THIS(IDefClFImpl,iface);
 596
 597         TRACE("%p->(%p,%s,%p)\n",This,pUnkOuter,shdebugstr_guid(riid),ppvObject);
 598
 599         *ppvObject = NULL;
 600
 601         if ( This->riidInst==NULL ||
 602              IsEqualCLSID(riid, This->riidInst) ||
 603              IsEqualCLSID(riid, &IID_IUnknown) )
 604         {
 605           return This->lpfnCI(pUnkOuter, riid, ppvObject);
 606         }
 607
 608         ERR("unknown IID requested %s\n",shdebugstr_guid(riid));
 609         return E_NOINTERFACE;
 610 }
 611 /******************************************************************************
 612  * IDefClF_fnLockServer
 613  */
 614 static HRESULT WINAPI IDefClF_fnLockServer(LPCLASSFACTORY iface, BOOL fLock)
 615 {
 616         ICOM_THIS(IDefClFImpl,iface);
 617         TRACE("%p->(0x%x), not implemented\n",This, fLock);
 618         return E_NOTIMPL;
 619 }
 620
 621 static ICOM_VTABLE(IClassFactory) dclfvt =
 622 {
 623     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 624     IDefClF_fnQueryInterface,
 625     IDefClF_fnAddRef,
 626   IDefClF_fnRelease,
 627   IDefClF_fnCreateInstance,
 628   IDefClF_fnLockServer
 629 };
 630
 631 /******************************************************************************
 632  * SHCreateDefClassObject                       [SHELL32.70]
 633  */
 634 HRESULT WINAPI SHCreateDefClassObject(
 635         REFIID  riid,
 636         LPVOID* ppv,
 637         LPFNCREATEINSTANCE lpfnCI,      /* [in] create instance callback entry */
 638         LPDWORD pcRefDll,               /* [in/out] ref count of the dll */
 639         REFIID  riidInst)               /* [in] optional interface to the instance */
 640 {
 641         IClassFactory * pcf;
 642
 643         TRACE("%s %p %p %p %s\n",
 644               shdebugstr_guid(riid), ppv, lpfnCI, pcRefDll, shdebugstr_guid(riidInst));
 645
 646         if (! IsEqualCLSID(riid, &IID_IClassFactory) ) return E_NOINTERFACE;
 647         if (! (pcf = IDefClF_fnConstructor(lpfnCI, pcRefDll, riidInst))) return E_OUTOFMEMORY;
 648         *ppv = pcf;
 649         return NOERROR;
 650 }
 651
 652 /*************************************************************************
 653  *  DragAcceptFiles             [SHELL32.54]
 654  */
 655 void WINAPI DragAcceptFiles(HWND hWnd, BOOL b)
 656 {
 657         LONG exstyle;
 658
 659         if( !IsWindow(hWnd) ) return;
 660         exstyle = GetWindowLongA(hWnd,GWL_EXSTYLE);
 661         if (b)
 662           exstyle |= WS_EX_ACCEPTFILES;
 663         else
 664           exstyle &= ~WS_EX_ACCEPTFILES;
 665         SetWindowLongA(hWnd,GWL_EXSTYLE,exstyle);
 666 }
 667
 668 /*************************************************************************
 669  * DragFinish           [SHELL32.80]
 670  */
 671 void WINAPI DragFinish(HDROP h)
 672 {
 673         TRACE("\n");
 674         GlobalFree((HGLOBAL)h);
 675 }
 676
 677 /*************************************************************************
 678  * DragQueryPoint               [SHELL32.135]
 679  */
 680 BOOL WINAPI DragQueryPoint(HDROP hDrop, POINT *p)
 681 {
 682         DROPFILES *lpDropFileStruct;
 683         BOOL bRet;
 684
 685         TRACE("\n");
 686
 687         lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 688
 689         *p = lpDropFileStruct->pt;
 690         bRet = lpDropFileStruct->fNC;
 691
 692         GlobalUnlock(hDrop);
 693         return bRet;
 694 }
 695
 696 /*************************************************************************
 697  *  DragQueryFile               [SHELL32.81]
 698  *  DragQueryFileA              [SHELL32.82]
 699  */
 700 UINT WINAPI DragQueryFileA(
 701         HDROP hDrop,
 702         UINT lFile,
 703         LPSTR lpszFile,
 704         UINT lLength)
 705 {
 706         LPSTR lpDrop;
 707         UINT i = 0;
 708         DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 709
 710         TRACE("(%08x, %x, %p, %u)\n",   hDrop,lFile,lpszFile,lLength);
 711
 712         if(!lpDropFileStruct) goto end;
 713
 714         lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->pFiles;
 715
 716         if(lpDropFileStruct->fWide == TRUE) {
 717             LPWSTR lpszFileW = NULL;
 718
 719             if(lpszFile) {
 720                 lpszFileW = (LPWSTR) HeapAlloc(GetProcessHeap(), 0, lLength*sizeof(WCHAR));
 721                 if(lpszFileW == NULL) {
 722                     goto end;
 723                 }
 724             }
 725             i = DragQueryFileW(hDrop, lFile, lpszFileW, lLength);
 726
 727             if(lpszFileW) {
 728                 WideCharToMultiByte(CP_ACP, 0, lpszFileW, -1, lpszFile, lLength, 0, NULL);
 729                 HeapFree(GetProcessHeap(), 0, lpszFileW);
 730             }
 731             goto end;
 732         }
 733
 734         while (i++ < lFile)
 735         {
 736           while (*lpDrop++); /* skip filename */
 737           if (!*lpDrop)
 738           {
 739             i = (lFile == 0xFFFFFFFF) ? i : 0;
 740             goto end;
 741           }
 742         }
 743
 744         i = strlen(lpDrop);
 745         i++;
 746         if (!lpszFile ) goto end;   /* needed buffer size */
 747         i = (lLength > i) ? i : lLength;
 748         lstrcpynA (lpszFile,  lpDrop,  i);
 749 end:
 750         GlobalUnlock(hDrop);
 751         return i;
 752 }
 753
 754 /*************************************************************************
 755  *  DragQueryFileW              [SHELL32.133]
 756  */
 757 UINT WINAPI DragQueryFileW(
 758         HDROP hDrop,
 759         UINT lFile,
 760         LPWSTR lpszwFile,
 761         UINT lLength)
 762 {
 763         LPWSTR lpwDrop;
 764         UINT i = 0;
 765         DROPFILES *lpDropFileStruct = (DROPFILES *) GlobalLock(hDrop);
 766
 767         TRACE("(%08x, %x, %p, %u)\n", hDrop,lFile,lpszwFile,lLength);
 768
 769         if(!lpDropFileStruct) goto end;
 770
 771         lpwDrop = (LPWSTR) ((LPSTR)lpDropFileStruct + lpDropFileStruct->pFiles);
 772
 773         if(lpDropFileStruct->fWide == FALSE) {
 774             LPSTR lpszFileA = NULL;
 775
 776             if(lpszwFile) {
 777                 lpszFileA = (LPSTR) HeapAlloc(GetProcessHeap(), 0, lLength);
 778                 if(lpszFileA == NULL) {
 779                     goto end;
 780                 }
 781             }
 782             i = DragQueryFileA(hDrop, lFile, lpszFileA, lLength);
 783
 784             if(lpszFileA) {
 785                 MultiByteToWideChar(CP_ACP, 0, lpszFileA, -1, lpszwFile, lLength);
 786                 HeapFree(GetProcessHeap(), 0, lpszFileA);
 787             }
 788             goto end;
 789         }
 790
 791         i = 0;
 792         while (i++ < lFile)
 793         {
 794           while (*lpwDrop++); /* skip filename */
 795           if (!*lpwDrop)
 796           {
 797             i = (lFile == 0xFFFFFFFF) ? i : 0;
 798             goto end;
 799           }
 800         }
 801
 802         i = strlenW(lpwDrop);
 803         i++;
 804         if ( !lpszwFile) goto end;   /* needed buffer size */
 805
 806         i = (lLength > i) ? i : lLength;
 807         lstrcpynW (lpszwFile, lpwDrop, i);
 808 end:
 809         GlobalUnlock(hDrop);
 810         return i;
 811 }